干旱区生态环境知识资源中心(Arid): 基于遥感的塔里木盆地北缘绿洲干湿季土地盐渍化监测

Arid

	基于遥感的塔里木盆地北缘绿洲干湿季土地盐渍化监测
其他题名	Monitoring of soil salinization in Northern Tarim Basin, Xinjiang of China in dry and wet seasons based on remote sensing
	姚远; 丁建丽; 张芳; 王刚; 江红南
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2013
卷号	24 期号:11 页码:3213-3220
中文摘要	土壤盐渍化是导致干旱区土地退化、抑制植被生长、影响区域农业生产的最主要的生态环境地质问题.利用遥感数据准确、快速地获取区域盐渍化土壤的动态变化信息对于土壤盐渍化监测具有重要意义.本文以盐渍化现象严重的新疆渭干河-库车河三角洲绿洲为研究区,以2011年4月15日和2011年9月22日成像的两期Landsat-TM多光谱遥感数据为数据源,结合对研究区实地考察所采集的实测数据,通过提取改进型归一化差异水体指数、归一化植被指数以及K-L变换后所提取的第3主成分等参数作为特征量,利用决策树分类方法分别建立了研究区两个关键季节(干季和湿季)的土壤盐渍化信息提取模型,并绘制了两个季节的土壤盐渍化信息分类图.结果表明: 该方法对干季和湿季盐渍地信息的提取精度分别达到87.2%、85.3%,识别精度较高;采用该方法可以有效地对盐渍地变化信息及其空间分布状况进行监测,可为干旱区盐渍地的综合治理和绿洲土地资源的合理利用提供科学依据.
英文摘要	Soil salinization is one of the most important eco-environment problems in arid area, which can not only induce land degradation, inhibit vegetation growth, but also impede regional agricultural production. To accurately and quickly obtain the information of regional saline soils by using remote sensing data is critical to monitor soil salinization and prevent its further development. Taking the Weigan-Kuqa River Delta Oasis in the northern Tarim River Basin of Xinjiang as test object, and based on the remote sensing data from Landsat-TM images of April 15, 2011 and September 22, 2011, in combining with the measured data from field survey, this paper extracted the characteristic variables modified normalized difference water index (MNDWI), normalized difference vegetation index (NDVI), and the third principal component from K-L transformation (K-L3). The decision tree method was adopted to establish the extraction models of soil salinization in the two key seasons (dry and wet seasons) of the study area, and the classification maps of soil salinization in the two seasons were drawn. The results showed that the decision tree method had a higher discrimination precision, being 87.2% in dry season and 85.3% in wet season, which was able to be used for effectively monitoring the dynamics of soil salinization and its spatial distribution, and to provide scientific basis for the comprehensive management of saline soils in arid area and the rational utilization of oasis land resources.
中文关键词	干旱区 ; 遥感 ; 决策树模型 ; 干湿季 ; 土壤盐渍化
英文关键词	arid area remote sensing decision tree model dry and wet seasons soil salinization
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4988896
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230422
作者单位	新疆大学资源与环境科学学院, 绿洲生态教育部重点实验室, 乌鲁木齐, 新疆 830046, 中国
推荐引用方式 GB/T 7714	姚远,丁建丽,张芳,等. 基于遥感的塔里木盆地北缘绿洲干湿季土地盐渍化监测[J]. 新疆大学,2013,24(11):3213-3220.
APA	姚远,丁建丽,张芳,王刚,&江红南.(2013).基于遥感的塔里木盆地北缘绿洲干湿季土地盐渍化监测.应用生态学报,24(11),3213-3220.
MLA	姚远,et al."基于遥感的塔里木盆地北缘绿洲干湿季土地盐渍化监测".应用生态学报 24.11(2013):3213-3220.